Strap-hinge



(No Model.) 1

W. H. HART.

STRAP HINGE Patent ed Oct. 23, 1894.

w/ZNESSEE ETERS cc PHOTD-UTHOw WASHINGTON n c UNITED STATES ATENT FFIcE.

WILLIAM H. HART, OF NEW BRITAIN, CONNECTICUT.

STRAP-HINGE.

SPECIFICATION forming part of Letters Patent No. 527,975, dated October23, 1 894. Application filed April 10, 1 8 94. Serial No. 507,032. (Nomodel.)

To all whom it may concern.-

Be it known that I, WILLIAM H. HART, a citizen of the United States,residing at New Britain, in the county of Hartford and State ofConnecticut, have invented certain new and useful ImprovementsinStrapHinges, of which the following is a specification.

My invention relates to improvements in strap hinges, and the mainobject of my improvement is to form a strap hinge of superior strengthin a cheap and efficient manner.

In the accompanying drawings: Figure 1 is a front elevation of my hinge.Fig. 2 is an enlarged plan or edge View of the same, and Fig. 3 is aplan view of the knuckle portion of the two blanks for forming a pair ofhinge leaves. I

The leaves A and B may be of any ordinary form throughout their major orbody portion. The knuckles are formed by rolling the metal upon itselfand letting the end of the metal which forms the knuckle lap over aportion of the leaves. The leaf A has its knuckle 4 formed by rollingover the middle tongue 5, the ends of which are split and turnedoutwardly toward the edge of the leaf, as at 6, 6. The portions solapped upon the leaf A may if desired be secured thereto by means of therivets 7, but said rivets may be dispensed with if desired. I form screwholes near the ends 6, 6 as at 8, 8, which screw holes register withholes through the leaf A so that when the fastening screws are insertedthe ends 6, 6 are firmly secured in place and the rivets 7, 7 thenbecome unnecessary. I form this middle tongue 5 from the blank 5 Fig. 3,which is split along the middle broken line 9. The leaf B is providedwith two tongues 10, 10 which are rolled over and lapped upon its bodyto form the knuckles 11, and I bend these ends inwardly so as to meeteach other as shown in Fig. 1. I also provide this leaf and its tongueswith screw holes 8 as in the leaf A and said tongues may or may not beadditionally secured by means of the rivets 12. These tongues 10 areformed from the tongue blanks 10 in the blank, Fig. 3, in which thebroken lines designate the line of severing the two blanks and show howone may be cut from the other. The corners of the leaf A between theoutwardly turned ends 6 of the tongue 5 and the knuckles 11 may be cutout as shown in Fig. 1, and as indicated by the dotted lines 13 in Fig.3, thereby skeletonizing the leaf A. In like manner that portion of theleaf B which lies between the knuckle 4 and the tongues 10 may be cutout to skeletonize the leaf B, as shown in Fig. 1, and as indicated bythe dotted line let in Fig. 3, but if desired both of the leaves may beleft solid and merely cut on the dividing lines, as indicated in Fig. 3by the broken lines. The leaves are connected by any ordinary pin orpintle, as at 15.

By my improvements, I form a knuckle with overlapping ends turnedoutwardly on one leaf and inwardly on the companion leaf so as toproduce a bracing effect and form a very strong and efficient hinge,which if desired, may have the adjacent portion. of the metal removed toimprove the appearance of the hinge. At the same time this bracingeffect is produced by bending edgewise the straight tongues which are sodisposed on the leaf blanks that said leaves may be cut out one from theother with said tongue blanks thereon, whereby there is no waste ofstock and consequently this superior article is produced at a smallcost.

I am aware that a prior expired patent shows and describes a sheet metalhinge having the knuckles formed by rolling the metal upon itself andletting the end of the metal which forms each of the knuckles lap over aportion of the leaves, andI hereby disclaim the same.

My hinge includes the entire hinge above disclaimed and in additionthereto I extend the knuckle forming tongues so that the central one maybe split and have its members bent edgewise and turned outwardly to theedges of its leaf while the other knuckle tongues may be bent edgewiseand turned inwardly with their ends abutting against each other thusproducing an ornamental appearance and giving an additionalbracingefifect while at the same time the parts may be cut out from eachother without waste of stock.

I claim as my inventiontoo The herein described strap hinge, consistofsaid leaf bent edgewise and turned ining of the leaf A having a middletongn-ewardly, substantially as described and for the 10 forming-knucklerolled upon itself and di purpose specified. vided into two memberswhich are lapped 5 upon the body of said leaf bent edgewise and turnedoutwardly, as shown, and a companion Witnesses: leaf B having twoknuckle forming tongues A.- W. STIPEK, rolled upon themselves lappedupon the body JAMES SHEPARD.

WM. H. HART.

